Create 12504_Richr_Wong.cpp

From http://blog.csdn.net/Richr_Wong/article/details/50193361

UVA/12504_Richr_Wong.cpp

@@ -0,0 +1,60 @@
+#include <iostream>
+#include <strstream>
+#include <sstream>
+#include <map>
+#include <set>
+#include <cstdio>
+#include <cstring>
+using namespace std;
+char bufold[1000],bufnnew[1000];
+string key,value;
+map<string,string>old,nnew;
+map<string,string>::iterator it;
+set<string>add,sub,cha;
+set<string>::iterator itt;
+inline void filter(char *str,int n){
+    for(int i=0;i<n;i++)if(str[i]=='{'||str[i]==':'||str[i]==','||str[i]=='}')str[i]=' ';
+}
+int main()
+{
+    int n;
+    cin>>n;
+    getchar();
+    while(n--)
+    {
+        gets(bufold);
+        gets(bufnnew);
+        filter(bufold,strlen(bufold));
+        filter(bufnnew,strlen(bufnnew));
+        istringstream oldin(bufold);
+        istringstream nnewin(bufnnew);
+        old.clear();nnew.clear();
+        while(oldin>>key>>value)old[key]=value;
+        while(nnewin>>key>>value)nnew[key]=value;
+        add.clear();sub.clear();cha.clear();
+        for(it=nnew.begin();it!=nnew.end();it++)
+            if(old.find(it->first)==old.end())add.insert(it->first);
+        for(it=old.begin();it!=old.end();it++)
+            if(nnew.find(it->first)==nnew.end())sub.insert(it->first);
+        for(it=nnew.begin();it!=nnew.end();it++)
+            if(old.find(it->first)!=old.end()&&old[it->first]!=it->second)
+                cha.insert(it->first);
+        if(add.empty()&&sub.empty()&&cha.empty()){
+            cout<<"No changes"<<endl;
+        }
+        if(!add.empty()){
+            cout<<"+"<<*(add.begin());
+            for(itt=add.begin(),itt++;itt!=add.end();itt++)cout<<","<<*itt;cout<<endl;
+        }
+        if(!sub.empty()){
+            cout<<"-"<<*(sub.begin());
+            for(itt=sub.begin(),itt++;itt!=sub.end();itt++)cout<<","<<*itt;cout<<endl;
+        }
+        if(!cha.empty()){
+            cout<<"*"<<*(cha.begin());
+            for(itt=cha.begin(),itt++;itt!=cha.end();itt++)cout<<","<<*itt;cout<<endl;
+        }
+        cout<<endl;
+    }
+    return 0;
+}